While Xpadder was the industry standard for years, modern alternatives exist:
Here’s everything you need to know about Xpadder—what it is, how it works, and why it remains a classic. xpadder
Xpadder remains the most stable and straightforward option for pure keyboard-to-controller mapping. Its simplicity is its strength. While Xpadder was the industry standard for years,
Save your profile and load it when you're ready to play. how it works
It can be used to control web browsers, media players, or even scientific software (like PyMOL or Coot ) using a controller for better ergonomics or accessibility.
For modern Steam gamers, Steam Input may suffice. But for everyone else—from retro enthusiasts to accessibility users—Xpadder is an essential tool that refuses to become obsolete.